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Chemical characterization of Brickellia cavanillesii (Asteraceae) using gas chromatographic methods

机译:气相色谱法对桔梗(菊科)的化学表征

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AbstractA methanol extract of lyophilized Brickellia cavanillesii was quantitatively analyzed using gas chromatographic (GC) techniques. The chromatographic methods employed were (i) GC-flame ionization detector (GC-FID), (ii) GC-mass spectrometry (GC-MS), and (iii) purge and trap GC-MS (P&T GC-MS). Thirteen compounds were identified with a quality match of 90% and above using GC-MS. The compounds were (1) Cyclohexene, 6-ethenyl-6-methyl-1-(1-methylethyl)-3-(1-methylethylidene)-, (S)-; (2) Bicylo (2.2.1) heptan-2-one, 1, 7, 7-trimethyl-(1S, 4S)-; (3) Phenol, 2-methoxy-4-(1-propenyl)-; (4) Benzene, 1-(1, 5-dimethyl-4-hexenyl)-4-methyl-; (5) Naphthalene, 1, 2, 3, 5, 6, 8a-hexahydro4, 7-dimethyl-1-1-(1-methylethyl)-, (1S-cis)-; (6) Phenol, 2-methoxy-; (7) Benzaldehyde, 3-hydroxy-4-methoxy-; (8) 11, 13-Eicosadienoic acid, methyl ester; (9) 2-Furancarboxaldehyde, 5-methyl-; (10) Maltol; (11) Phenol; (12) Hydroquinone; (13) 1H-Indene, 1-ethylideneoctahydro-7a-methyl-, (1E, 3a.alpha, 7a.beta.). Other compounds (14) 3-methyl butanal; (15) (D)-Limonene; (16) 1-methyl-4-(1-methyl ethyl) benzene; (17) Butanoic acid methyl ester; (18) 2-methyl propanal; (19) 2-butanone; (20) 2-pentanone; and (21) 2-methyl butane were also identified when P&T GC-MS was performed. Of the 21 compounds identified, 12 were validated using chemical standards. The identified compounds were found to be terpenes, derivatives of terpenes, esters, ketones, aldehydes, and phenol-derived aromatic compounds; these are the primary constituents of the essential oils of many plants and flowers.
机译:摘要使用气相色谱(GC)技术定量分析了冻干的桔梗的甲醇提取物。使用的色谱方法是(i)GC火焰电离检测器(GC-FID),(ii)GC质谱法(GC-MS)和(iii)吹扫捕集GC-MS(P&T GC-MS)。使用GC-MS鉴定出13种化合物,其质量匹配度达到或超过90%。化合物为(1)环己烯,6-乙烯基-6-甲基-1-(1-甲基乙基)-3-(1-甲基亚乙基)-,(S)-; (2)Bicylo(2.2.1)heptan-2-one,1,7,7,-trimethyl-(1S,4S)-; (3)苯酚,2-甲氧基-4-(1-丙烯基)-; (4)苯,1-(1,5-二甲基-4-己烯基)-4-甲基-; (5)萘,1、2、3、5、6、8a-六氢4、7-二甲基-1-1-(1-甲基乙基)-,(1S-顺式)-; (6)苯酚,2-甲氧基-; (7)苯甲醛,3-羟基-4-甲氧基-; (8)11、13-二十碳二烯酸,甲酯; (9)2-呋喃甲醛,5-甲基-; (10)麦芽酚; (11)苯酚; (12)氢醌; (13)1H-茚,1-亚乙基八氢-7a-甲基-(1E,3aα,7aβ)。其他化合物(14)3-甲基丁醛; (15)(D)-柠檬烯; (16)1-甲基-4-(1-甲基乙基)苯; (17)丁酸甲酯; (18)2-甲基丙醛; (19)2-丁酮; (20)2-戊酮;当进行P&T GC-MS时,还鉴定出(21)2-甲基丁烷。在鉴定出的21种化合物中,有12种已使用化学标准品进行了验证。发现所鉴定的化合物为萜烯,萜烯的衍生物,酯,酮,醛和苯酚衍生的芳族化合物。这些是许多植物和花卉精油的主要成分。

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